511868 has 24 divisors (see below), whose sum is σ = 1039584. Its totient is φ = 216000.

The previous prime is 511867. The next prime is 511873. The reversal of 511868 is 868115.

It is a self number, because there is not a number n which added to its sum of digits gives 511868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2738 + ... + 2918.

It is an arithmetic number, because the mean of its divisors is an integer number (43316).

2⁵¹¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

511868 is an abundant number, since it is smaller than the sum of its proper divisors (527716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511868 is a wasteful number, since it uses less digits than its factorization.

511868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 291 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 511868 is about 715.4495090501. The cubic root of 511868 is about 79.9931244091.

It can be divided in two parts, 5 and 11868, that multiplied together give a triangular number (59340 = T₃₄₄).

The spelling of 511868 in words is "five hundred eleven thousand, eight hundred sixty-eight".